CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) [Abstract]        
Sales $ 240.5 $ 184.7 $ 849.1 $ 742.2
Shipping and handling cost 57.5 44.4 233.0 200.0
Product cost (Note 3) 33.2 94.5 336.5 363.2
Gross profit 149.8 45.8 279.6 179.0
Selling, general and administrative expenses 26.8 22.7 76.2 73.7
Operating earnings 123.0 [1] 23.1 203.4 [1] 105.3
Other (income) expense:        
Interest expense 5.5 4.4 14.4 13.2
Other, net (3.1) (0.1) 0.9 (3.2)
Earnings before income taxes 120.6 18.8 188.1 95.3
Income tax expense 32.7 3.4 50.7 22.9
Net earnings $ 87.9 $ 15.4 $ 137.4 $ 72.4
Basic net earnings per common share (in dollars per share) $ 2.60 $ 0.46 $ 4.07 $ 2.15
Diluted net earnings per common share (in dollars per share) $ 2.60 $ 0.46 $ 4.07 $ 2.15
Weighted-average common shares outstanding:        
Basic (in shares) 33,575 33,469 33,542 33,378
Diluted (in shares) 33,601 33,484 33,566 33,402
Cash dividends per share (in dollars per share) $ 0.60 $ 0.545 $ 1.80 $ 1.635
[1] Includes a gain of $82.3 million in the salt segment and $1.0 million in corporate and other resulting from an insurance settlement related to a tornado at its salt facilities in Goderich, Ontario in August 2011.